GPT Image 2.5 Sunburstvs.Reve 2.1

Which one is better?

In our own test both are on par. In the arena, GPT Image 2.5 Sunburst leads. Reve 2.1 has no API price.

Test images

Same task, the first image of each. The task with the biggest difference is preselected.

GPT Image 2.5 Sunburst: Character and detail, first image from the fixed test run — GPT Image 2.5 Sunburst64 out of 100

Reve 2.1: Character and detail, first image from the fixed test run — Reve 2.180 out of 100

Result for “Character and detail”:Reve 2.1 slightly ahead

Prompt given to both modelsCreate a square cinematic full-body portrait of a fictional bicycle courier waiting under a transparent umbrella at a rainy tram stop in Hamburg at blue hour. She wears a mustard raincoat, navy trousers, red sneakers, a silver helmet, and carries a teal messenger bag. Keep both hands visible, render the bicycle correctly, use realistic wet-street reflections, and include no readable brand names.

What the rating looks at: Anatomy, clothing, and spatial consistency.

“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.

Test protocol of the images

Each test attempt uses the same archived prompt and one request. The first output of that attempt counts. Repeats after technical test failures are disclosed for the affected images. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier and prompt processing can still differ. The images are a practical visual test, not a reconstruction of the arena configuration.

Character and detail

GPT Image 2.5 Sunburst: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:51 PM. Source

Reve 2.1: manual, Official Reve web app; Reve 2.1; chat creation; one request; 1:1 requested in prompt; first of two results; free plan; 2026-08-14; https://app.reve.com/model, source 4096x4096, stored 1024x1024 (Lanczos3 downscale), generated Aug 14, 2026, 4:23 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

GPT Image 2.5 Sunburst image SHA 256: 2bcd5e2358dbf9e2f11336ebf6c4a4a15e0a9a10261dd74378d40985ac68ec6d

Reve 2.1 image SHA 256: 29e9f7f38ed5c63dcfaab671a49fb9f4e9f82cd24b99134b87e1c22442822126

Infographic

GPT Image 2.5 Sunburst: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:52 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

GPT Image 2.5 Sunburst image SHA 256: 7dab94e5588be73aefe08f23f9d56ced4e2ddb2b29f754db41b057025cf34847

Reve 2.1 image SHA 256: 30d157e85d75eb2ca1f71152d27f26d378ad8ea49b899d5f350ae0cda4e2bc59

Product photography

GPT Image 2.5 Sunburst: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:51 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

GPT Image 2.5 Sunburst image SHA 256: c648276704e06f7925f2325e8ffff0d9d0a9bd6c5bb4866785abac92ce97ff9a

Reve 2.1 image SHA 256: 1f91c3cb481151fb5165194b4edea2a46e786ca80e4ec3bdd888e3ba0016c510

Typography and layout

GPT Image 2.5 Sunburst: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:50 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

GPT Image 2.5 Sunburst image SHA 256: fd6a3767ba8253869cb94d5346f025541dac924c2190df2c37b366b182986cf8

Reve 2.1 image SHA 256: 84bcd1680fd0ae861ec66c21ab8f4cd79738bd093eb87ffe7283d9842c37cb1d

The numbers at a glance

Arena ratingfrom votes by users · higher is better

1,427

GPT Image 2.5 Sunburst

Rank 1 of 21

1,300

Reve 2.1

Rank 6 of 21

GraduallyBenchour own rating, 0 to 100 · higher is better

GPT Image 2.5 Sunburst

Rank 8 of 108

Reve 2.1

Rank 13 of 108

Price per imagedollars through the API · lower is better

$0.21

GPT Image 2.5 Sunburst

expensive

n/a

Reve 2.1

no API price

Ranks among the 21 image models with an arena rating and the 108 with a GraduallyBench run; prices compared with 28 models with an API price.

GPT Image 2.5 Sunburst

Subscription: No OpenAI subscription includes this model. Through other providers from ≈ €6.39 a month (ElevenLabs Starter, with limited credits). 62 plans in Germany.
Via API: $0.21 per image, 100 images $21.07.

Reve 2.1

Subscription: No Reve subscription includes this model. Through other providers from ≈ €12.78 a month (Recraft Basic, with limited credits). 3 plans in Germany.
Via API: No API price known. Access: .

Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.

Arena rating (LMArena) from Oct 28, 2026 · GraduallyBench from Nov 3, 2026 · API prices from Nov 3, 2026 · Subscription database from Sep 29, 2026 (35 days old)

All data side by side

The better value is bold. For ratings only when the gap is clear.

Kennzahl	GPT Image 2.5 Sunburst	Reve 2.1
Ratings
Arena ratingfrom votes by users, higher is better	1,427	1,300
Arena rank	Rank 1 of 21	Rank 6 of 21
Arena votesmore votes, a safer rating	40,323	8,243
GraduallyBenchour own rating, 0 to 100	75	73
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	54	54
Product photographyMaterials, reflections, and fine details	87	74
Character and detailAnatomy, clothing, and spatial consistency	64	80
InfographicNumbers, labels, and visual organization	97	85
API price
Per imagelower is better	$0.21	n/a
100 images	$21.07	n/a
Profile
Released	Sep 8, 2026	July 2026
Weightsopen means: runs locally	proprietary	proprietary
Lifecycle	no notice	Retired; no new image or video generation after September 27, 2026. Existing assets can be downloaded until October 31, 2026
Access	API
Parameters	not published	not published
Largest output	3,840 × 2,160 pixels	4K
Plans in Germanynaming exactly this model	62	3

API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.

Sources: GPT Image 2.5 Sunburst model source (verified Sep 24, 2026) · Reve 2.1 model source, status source (verified Aug 15, 2026)

Arena ratings by category

From blind votes on LMArena. “Ahead” means the lead is clear.

Arena rating per categoryfrom votes by users · higher is betterGPT Image 2.5 SunburstReve 2.1

Text to Image: 3D modeling1,4161,281ahead

Text to Image: Art1,4091,291ahead

Text to Image: Cartoon1,4561,310ahead

Text to Image: Commercial design1,4191,315ahead

Text to Image: Overall1,4271,300ahead

Text to Image: Photorealism1,4331,302ahead

Text to Image: Portraits1,4611,316ahead

Text to Image: Text rendering1,4661,339ahead

Image Editing: Overall1,5171,373ahead

LMArena from Oct 28, 2026

All individual values with sources

Rating	GPT Image 2.5 Sunburst	Reve 2.1	Source
Text to Image: 3D modeling	1,416	1,281	LMArenaRetrieved Oct 28, 2026
Text to Image: Art	1,409	1,291	LMArenaRetrieved Oct 28, 2026
Text to Image: Cartoon	1,456	1,310	LMArenaRetrieved Oct 28, 2026
Text to Image: Commercial design	1,419	1,315	LMArenaRetrieved Oct 28, 2026
Text to Image: Overall	1,427	1,300	LMArenaRetrieved Oct 28, 2026
Text to Image: Photorealism	1,433	1,302	LMArenaRetrieved Oct 28, 2026
Text to Image: Portraits	1,461	1,316	LMArenaRetrieved Oct 28, 2026
Text to Image: Text rendering	1,466	1,339	LMArenaRetrieved Oct 28, 2026
Image Editing: Overall	1,517	1,373	LMArenaRetrieved Oct 28, 2026

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Predecessor and successor

PredecessorGPT Image 2.5 Sunburst vs. GPT Image 2Predecessor of GPT Image 2.5 Sunburst
GPT Image 2.5 Sunburst has no successor yet
Reve 2.1 has no successor yet

Test images

The numbers at a glance

GPT Image 2.5 Sunburst

Reve 2.1

All data side by side

Arena ratings by category

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